/*
 * Copyright 2015, Google Inc. All rights reserved.
 *
 * Redistribution and use in source and binary forms, with or without
 * modification, are permitted provided that the following conditions are
 * met:
 *
 *    * Redistributions of source code must retain the above copyright
 * notice, this list of conditions and the following disclaimer.
 *    * Redistributions in binary form must reproduce the above
 * copyright notice, this list of conditions and the following disclaimer
 * in the documentation and/or other materials provided with the
 * distribution.
 *
 *    * Neither the name of Google Inc. nor the names of its
 * contributors may be used to endorse or promote products derived from
 * this software without specific prior written permission.
 *
 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
 * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
 * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
 * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
 * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
 * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
 * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
 * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
 */

package com.example;

import com.proxy.client.ProxyClientBuilder;
import com.service.GreeterService;
import com.service.HelloRequest;
import com.service.HelloResponse;
import io.grpc.ManagedChannel;
import io.grpc.ManagedChannelBuilder;

import java.util.concurrent.TimeUnit;
import java.util.logging.Level;
import java.util.logging.Logger;

/**
 * A simple client that requests a greeting from the {@link HelloWorldServer}.
 */
public class JavaProxyClient {
    private static final Logger logger = Logger.getLogger(JavaProxyClient.class.getName());

    private final ManagedChannel channel;
    private final ProxyClientBuilder builder;


    /**
     * Construct client connecting to HelloWorld server at {@code host:port}.
     */
    public JavaProxyClient(String host, int port) {
        channel = ManagedChannelBuilder.forAddress(host, port)
                .usePlaintext(true)
                .build();
        builder = new ProxyClientBuilder(channel);
    }

    public void shutdown() throws InterruptedException {
        channel.shutdown().awaitTermination(5, TimeUnit.SECONDS);
    }

    /**
     * Say hello to server.
     */
    public void greet(String name) {
        try {
            logger.info("Will try to greet " + name + " ...");

            HelloRequest request = new HelloRequest(name);
            HelloRequest request2 = new HelloRequest(name + "2");


            GreeterService greeterService = builder.get(GreeterService.class);
            HelloResponse response = greeterService.hello(request, request2);


            logger.info("Greeting:------------ " + response.getMessage());
        } catch (RuntimeException e) {
            logger.log(Level.WARNING, "RPC failed", e);
            return;
        }
    }

    /**
     * Greet server. If provided, the first element of {@code args} is the name to use in the
     * greeting.
     */
    public static void main(String[] args) throws Exception {
        JavaProxyClient client = new JavaProxyClient("localhost", 50051);
        try {
            /* Access a service running on the local machine on port 50051 */
            String user = "world";
            if (args.length > 0) {
                user = args[0]; /* Use the arg as the name to greet if provided */
            }
            client.greet(user);
        } finally {
            client.shutdown();
        }
    }


}
